The immune system is the body's defense against disease. white blood cells, or lymphocytes, are one type of immune system cell. which of the following immune system cells make markers that tag invading pathogens for later destruction?
a. t cells
b. cytotoxic t cells
c. macrophages
d. b cells

D. B cells

Explanation:

Because White blood cells that produce antibodies and aid in immunological memory.

I think?

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.

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